Electromechanical resonating device



Dec. 1, 1931 M. CHIROL ELECTROMECHANICAL RESONATING DEVI CE Filed May21. 1950 2 Inventor Mala ice C'hiraZ Patented Dec. 1, 1931 I MAURICECHIROL-OF rams, FRANCE, assrenon j ro CQMPAGNIE rouninarmaaroa emceaxon-Des COMP'IIEURS ET MATERIEL nus'mns A eaz, or MONTROUGEY same,

FRANGIQA JOINT-STOCK COMPANY OF FRANCE I nLEcrRoM cIrAmcaL ansouhTING;nnvrcn' .ip u-c'aeafiiedm 21, 1930,Seria1 I Io. 454,490; and in miceApril is, 1930;

It is old to, superimpose on ele'ctric supply lines, currents generallyof high frequencies different from that of the supply system, with aView to remotely controlling receiving-apparatus used for changingtariff meters or for actuatinw switches. w o l o l i lhe recelv'ingapparatus used for-thls type of telecontrol are generally'tunedmechani Ishaft 16 which carries a finger 17 movable u a eally or electrically tothe frequencies of, the l superimposed signalling currents;

to utilize polarized receivers' fitted Witlrvibracing reeds or tuningforks tunedto the frequencies of the superimposed currents and energizedby circuits likewisetuned to such frequencies! Thepresent inventionrelates to a resonating electro-mechanicalreceiver which is particularly suited to controlling a plurality of C(I-OltilllliLtQCloperations.

An example of theapplication of the invention to'the combined control oftwo lighting circuits has been illustratedinthe accompanying drawingswherein? Fig. 1 illustrates diagrammatically a cuit arrangement in whichis mounted an electromechanical device for; controlling a set of lamps.a p I Figs. 2 and 3 illustrate diagrammatically in plan and partsectional elevation respeca 'tively the mechanical featuresofsaidelectromechanicaldevice;

l Fig. 4 illustrates'the several positions which therontrollingswitchesmay assume.

" .1 and 2 desi 'nate' the supply cables on which the signallingcurrents are superlm;

posed'g "3 and4 are the energizing coils for, the receiver which'are'connected' in series with which directs the current througha. lamp8 or lamp 9 alternatively; ,The switch 6 is" mounted ona shaft 14 whichcarries va finger 15 movable between two fixed stopsllO and 11. Thereversing switchiiis secured to a between two fixed stops 12 and 13; 1-8is a magnet which serves to polarize thevibratingreeds-L L Lrespectivelyftuned to Cirthe" frequencies F F F The series connectedcoils 3 and4 are mounted respectively on laminated yokes 19 and 20 whichcontact with the polar ends'of the magnetlS and p 1 The wheel R issecured to two side gears of 3 To this effect, it'ha's already beenproposed s 23 is mounte'dfast on a quill shaft 25 carrying a pinion 26whichrotatesthe aforemen- Y tioned shaft 14 through the medium ofjthegear train 27 and 28. The shaft 24 is locked on the shaft 29:whichcarries, a pinion 3O rotatingtheaforementionedshaft 16 through I thegear wheel 31. Y a a The apparatus operates as follows a a Themercury'switches 6 and 7 being respecand its) vibrations, transmittedby-the pawl I cause the ratchet wheel R to rotate in the clockwisedirection as viewed 1n the direction ;of thearrow f. The lay shaft 23 isrotated in the same direction until the finger 15 bears against the stop10. At'this instant, the shaft '23 is arrested and the-pinion 21 causesthe side gear secured to the wheel R to rotate in the opposite direction'to R Simultaneously,

the shaft 24not being able to rotate inrthe same direction'as B becausethe finger 17 presses'against the stop 13, the pinion 22 rotates the sunwheelsecuredto R in the oppositedirection to R whereby the lamp 9 islighted and the wheels rotate so long as the current of frequency Fflows. I

To light the lamp 8 and to extinguish the lamp 9, it isonly necessary tosuperimpose a current of-frequenoy F The reed starts vibrating androtates the wheel R in'the counter-clockwise direction. The shaft 24 isthen rotated in the same direction and, through the medium of thepinions 30 and 31, rotates the reversing switch 7 until the finger 17presses against the stop 12. At this instant, the shaft 24'is locked andthe pinion 22 rotates the sun wheel secured to R in the 0ppositedirection to R The second side gear secured to R rotates, through themedium of the pinion '21, the side gear secured to R in the samedirection as R and the switch 6 remains in its previous position. Thetwo switches now occupy the positions shown at A and thus the lamp 8glows whereas the lamp 9 is dark.

Finally, in order to extinguish the lamp 8, it is only necessary tosuperimpose a frequency of current F The reed L starts vibrating androtates the ratchet wheel R in the counter-clockwise direction throughthe medium of the pawl I The shaft 23 is rotated in the same directionuntil the finger 15 presses against the stop 11. At this instant, theshaft 23 is locked and the pinion 21 rotates the side gear secured to Rin the opposite direction to R The result is that the shaft 24 isrotated in the same direction as R until the finger 17 presses againstthe stop 13. The shaft 2st is then locked and the pinion 22 rotates theside gear secured to R inthe opposite direction to R The switches nowoccupy the respective positions indicated at A and the cycle ofoperations ma-ythen berepeated. a

The apparatus described might likewise be used advantageously for theremote control of circuit-breakers provided for switching transformersinto or out of service, in particular on rural systems, saidtransformers being adapted'to the power used;

The apparatus according to the invention possesses great advantages. Inparticular, it enables the natural frequencies of the reeds to bebrought as closely together as desired, and consequently likewise thefrequencies'of the superimposed currents which manifestly and in themajority of cases simplifies the methods of superimposition relied on.

When a current of frequency F is superimposed, the reed L, startsvibrating and imparts a certain velocity to the wheel R,. If the bladesL and L are tuned to frequencies lying on either side of F and in theneighborhood thereof, they may likewise vi brato, with a smalleramplitude to be sure than L but nevertheless to a sufficient extent toimpart a low velocity to their respective wheels It and It, or at leastto make them advance by jerks. Notwithstanding this effect, theoperation performed will be that corresponding to the frequency Fbecause the reed L will impart to the wheel R a velocity substantiallygreater than the velocity imparted to the wheels R and R respectively bythe reeds In and L I claim:

1. In an electro mechanical device of the class described, thecombination with three vibrating reeds of different natural frequencies,of two differentials each comprising two side gears in mesh with apinion gear, said differentials being coupled together through two ofsaid side gears while the other side gear of each differential remainsindependent, two switch controlling shafts, a stub shaft mounted fast oneach of said switch controlling shafts, and on which one of said piniongears is mounted to be rotatable rela tively thereto, means for limitingthe rotation of said switch controlling shafts in both directions, andmeans for transmitting the vibrations of said reeds to said independentside gears and coupled side gears respectively.-

2. In an electro-mechanical device of the class described, thecombination with three vibrating. reeds of different naturalfrequencies, of two differentials each comprising two sidegears in meshwith a pinion gear, said differentials being coupled together throughtwo of said side gears while the other side gear of each differentialremains independent, two switch controlling shafts, a stub shaft mountedon each of said switch controlling shafts and on which one of saidpinion gears is mounted to be rotatable relatively thereto, means forlimiting the rotation of said switch controlling shafts in bothdirections, three toothed wheels secured respectively to said (oupledand independent side gears, and three blades mounted respectively onsaid vibrating reeds and engaging with said respective toothed wheels torotate same.

3. In L11'OlQCtlfO-XHGClllIllCiLl device of the class described, thecombination with three vibrating reeds of different natural frequencies,of two differentials each comprising two slide gears in mesh with apinion gear, said differentials being coupled together through two ofsaid side gears while the other side gear of each differential remainsindependent, two switch controlling shafts, a stub shaft mounted fast oneach of said switch controlling shafts and on which one of said piniongears is mounted to be rotatable relatively thereto, a finger carried byeach of said switch controlling shafts, two fixed stops associated witheach of said fingers for arresting the movement of the correspondingswitch controlling shaft, and means for transmitting the vibrations ofsaid reeds to said independent side gears and coupled side gearsrespectively.

4. In an electro-mechanical device of the class described, thecombination with three vibrating reeds of different natural frequencies,of two differentials each comprising two side gears in mesh with apinion gear, said differentials being coupled together through two ofsaid side gears while the'other side gear of each differentialremainsindependi ent, two switch controlling shafts, a stub V c shaftmounted fast on each of said switch controlling shafts, and on Which oneof said pinion gears is mounted to be rotatable relatively thereto, afinger carried by each of said switch controlling shafts, two fixedstops associated with each of said fingers for arresting the movement ofthe corresponding switch controlling shaft, three toothed wheels securedrespectively to said coupled I and independent sidegears, and threeblades mounted respectively on said vibratlng reeds and engaging withsaid respectivetoothed wheels torotate same. i

MAURICE CHIROL.

